Prosper monnet



UNITED STATES PATENT OFFICE.

. PROSPER MONNET, OF LYONS, FRANCE, ASSIGNOR TO GILLIARD, P. MONNET &

CARTIER, OF SAME PLACE.

ANISOLIN AND-PROCESS OF MAKING IT.

SPECIFICATION forming part of Letters Patent No. 499,927, dated June 0, 1893.

Application filed April 13, 1892. Serial No. 428,961. (Specimens) Patented in France $eptember 28. 1891, No. 216,407, and in England March 9, 1892, "No. 4.6 77.

T0 at whom it may concern.- My invention relates to the manufacture or Be it known that I, PROSPER MONNET, a production of a certain new class of coloring citizen of the French Republic, residing at matters or dyes known as anisolins from Lyons, France, have invented certain new and the compounds known as rhodamins, which 5 useful Improvements in Coloring-Matters and latter may be prepared by several well known I 5 their Manufacture, (for which patents have processes and form salts, the general formula been granted in France, No. 216,407, dated of which is:

September 28, 1891, and in Great Britain, No. I

4,677, dated March 9, 1892,) of which the fol- I0 lowing is a specification.

(M' designating a monovalent metal.)

It is by the substitution for the metal of the cal, such as benzyl (C H Cl-I that I have suc- 5 above formula ot a simple alcoholic radical ceeded in producing my new coloring matters such as ethyl (0 1-1 methyl (CI-I amyl or dyes, the constitution of which is:

(0 11 &c., or of a compound alcoholic radi- CI-I 3 N HCl co -------o 0 H, on,

I OCH3 f 0 H, o C H on,

These coloring-matters have received the name anisolins on accconnt of their analogy H of the hydroxyl is replaced by the alcoholic with anisols which are phenols wherein the radical CH thus:

0 H 0H G H OCH Phenol Anisol CH /OI-I l N v N CH CH 0 H 3 11 Ol-I OOH Dimethyl-meta-amido-phenol. Dimethyl-meta-amido-anisol.

The dimethyl-meta-amido-phenol enters the dimethyl-metaamidoanisol into that of into the constitution of the rhodainins and the anisolins, t -hus CH3 :i N/ n co- --o a e 01-1 c n 0H3 I I \OH 00H l i on 001-1 6 4- C--O6H3 on C6H4--- o-----o n,,\ 01-1 y y N on on (Rhodamin-base) (Anisolin-base) transformed into a potassium salt represented by the following formula- Example of the preparation of a potassium it salt of a r'h0(lamin.The hydrochlorate of dimethyl meta amido phenol phtalein is CH3 o (CO D G S CH3 I l 103K I OK I s L L 0 H3 CH3 6 (potassium salt of diinethyl-meta-amido-phenol-phtalein.)

in the following manner: Ten kilograms of by filtration of its boiling solution, drained to hydrochlorate of dimethyl-metaamido-pheand dried. About ten kilograms of the ponol-phtalein are dissolved in fifty liters of tassium salt is obtained.

boiling water, and the resulting solution is Transformation into amlSoZim-Six kilo- 5 poured into another boiling solution of five grams of the potassium saltof dim'ethy1-metakilograms of caustic potash in twenty liters amido-phenol-phtalein or the corresponding :5 of water. The potassium salt is immediately quantity of a salt of another amide-phenolprecipitated in a crystalline form, more soluphtalein, or meta-amido-cresol-phtalein, dible in cold than hot solution; it is separated methylated or diethylated, &c., twenty kilograms of ethyl alcohol at 93 centesimal and three kilograms of chlorid of ethyl or its equivalent of chlorid of methyl, or of a chlorid or lod d or the equivalent of chlorid t benzyle, or In fact any haloid alcoholic salt are heated under pressure for four hours at a temperature in excess of 100 centigrade, preferably at about 120. After cooling, the product, withdrawn from the autoclave is diluted with water, distilled to drive off the excess of chlorid and to extract the alcohol, and then there is added the amount of hydrochloric acid necessary to form the salt of anisolin,

- after which it is precipitated with sea salt.

The separated salt of anisolin Inay'then be separated and further purified by crystallization or precipitation. Generally, the iodids and bromids being little soluble, crystallize;

the more soluble chlorids are dried after precipitation and form greenish spangles of metallic luster, very soluble in water. Under the same conditions, alcoholic chlorids, bromids and iodids, either simple or'compound, are capable of a reaction not only on the condensation products of pht'alic acid with the alkalized amido-phenols or amido-cresols, but also on those in which phtalic acid is replaced by succinic suberic, &c., acids, to produce equally new coloring matters or dies.

Having thus described my invention, I claim 1. The herein described method of substituting an alcoholic radical for the metal of a rhodamin salt, which consists in.mixing together an alcoholic haloid salt, a rhodamin salt and an alcohol, and heating the mixture until the reaction is effected, substantially as I set forth.-

2. The herein described method of substituting an alcoholic radical for the metal of arhodamin salt, which consists in mixing together an alcoholic chlorid or its specified equivalent, a rhodamin salt, and ethyl alcohol, and heating the mixture until the reaction is efiected, then diluting, then distilling in order 5 to drive olf the excess of chlorid and alcohol, then adding hydrochloric acid, and finally precipitating with salt, whereby a coloring matter or dye is produced, substantially as set forth.

3. The herein described method of producing a new coloring matter or dye which consists in mixing together ethyl alcohol, a potassium rhodamin salt, and asimple or compound alcoholic chlorid, then heating said mixture under pressure at a temperature exceeding centigrade until a reaction is effected, then diluting with water, then distilling in order to separate the alcohol and drive 01f the excess of chlorid of ethyl, then adding hydro- 6o chloric acid, whereby hydrochlorate of anisolin is formed, and then precipitating said hydrochlorate with sea salt, substantially as set forth.

4.. The new product or coloring matter hav- 6 ing the formula:-

said product being a reddish brown amorphous powder, soluble in water with strong affinity for fibers, and dyeing cotton without a mordant.

In witness whereof I have hereunto signed NC H HClv OC H OO H

NO H 1-101 my name in the presence of subscribing witnesses.

PROSPER MONNET.

Witnesses:

HENRY W. MARTIN, PIERRE CARTIER, G O. D. FAIREIELD. 

